Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized 
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Aidala, C.; Akiba, Y.; Alfred, M.; Andrieux, V.; Apadula, N.; Asano, H.; Azmoun, B.; Babintsev, V.; Bandara, N. S.; Barish, K. N.; Bathe, S.; Bazilevsky, A.; Beaumier, M.; Belmont, R.; Berdnikov, A.; Berdnikov, Y.; Blau, D.; Bok, Jeongsu; Brooks, M. L.; Bryslawskyj, J.; Bumazhnov, V.; Campbell, S.; Roman, V. Canoa; Cervantes, R.; Y., C.; Chiu, M.; Choi, I. J.; Choi, J.; Citron, Z. H.; Connors, M.; Cronin, N.; Csanád, M.; Csörgő, T.; Danley, T. W.; Daugherity, M.; David, G.; DeBlasio, K.; Dehmelt, K.; Denisov, A.; Deshpande, A.; Desmond, E. J.; Dion, A.; Dixit, Dhruv Utpalkumar; H., J.; Drees, A.; Drees, K. A.; Durham, J. M.; Durum, A.; Enokizono, A.; En’yo, H.; Esumi, S.; Fadem, B.; Fan, W.; Feege, N.; Fields, D. E.; Finger, M.; Fokin, S.; Frantz, J. E.; Franz, A.; Frawley, A. D.; Fukuda, Y.; Gal, C.; Gallus, P.; Gamez, E. A.; Garg, P.; Ge, H.; Giordano, F.; Goto, Y.; Grau, N.; Greene, S.; Perdekamp, M. Grosse; Gunji, T.; Guragain, H.; Hachiya, T.; Haggerty, J. S.; Hahn, K. I.; Hamagaki, H.; Hamilton, H. F.; Han, S. Y.; Hanks, J.; Hasegawa, S.; Haseler, T. O. S.; He, X.; Hemmick, T. K.; Hill, J. C.; Hill, K. K.; Hodges, A.; Hollis, R. S.; Homma, K.; Hong, B.; Hoshino, T.; Hotvedt, N.; Huang, J.; Huang, S.; Imai, K.; Inaba, M.; Iordanova, A.; Isenhower, D.; Ishimaru, S.; Ivanishchev, D.; Jacak, B. V.; Jezghani, M.; Ji, Z.; Jiang, X.; Johnson, B. M.; Jouan, D.; Jumper, D. S.; Kang, J. H.; Kapukchyan, D.; Karthas, S.; Kawall, D.; Kazantsev, A. V.; Khachatryan, V.; Khanzadeev, A.; Kim, C.; Kim, E.-J.; Kim, M.; Kincses, D.; Kistenev, E.; Klatsky, J.; Kline, P.; Koblesky, T.; Kotov, D.; Kudo, S.; Kurgyis, B.; Kurita, K.; Kwon, Y.; Lajoie, J. G.; Lebedev, A.; Lee, S.; Lee, S. H.; Leitch, M. J.; Leung, Y. H.; Lewis, N. A.; Li, X.; Lim, Sanghoon; Liu, M. X.; Loggins, V.-R.; Lökòs, S.; Lovasz, K.; Lynch, D.; Majoros, T.; Makdisi, Y. I.; Makek, M.; Manko, V.; Mannel, E.; McCumber, M.; McGaughey, P. L.; McGlinchey, D.; McKinney, C.; Mendoza, M.; Metzger, W. J.; Mignerey, A. C.; Milov, A.; Mishra, D.; Mitchell, J. T.; Mitrankov, Yu. M.; Mitsuka, G.; Miyasaka, S.; Mizuno, S.; Montuenga, P.; Moon, T.; Morrison, D. P.; Morrow, S. I.; Murakami, T.; Murata, J.; Nagai, K.; Nagashima, K.; Nagashima, T.; Nagle, J. L.; Nagy, M. I.; Nakagawa, I.; Nakano, K.; Nattrass, C.; Nelson, S.; Niida, T.; Nishitani, R.; Nouicer, R.; Novák, T.; Novitzky, N.; Nyanin, A. S.; O’Brien, E.; Ogilvie, C. A.; Koop, J. D. Orjuela; Osborn, J. D.; Öskarsson, A.; Ottino, G. J.; Ozawa, K.; Pantuev, V.; Papavassiliou, V.; Park, J. S.; Park, S.; Pate, S. F.; Patel, M.; Peng, W.; Perepelitsa, D. V.; Perera, G. D. N.; Peressounko, D. Yu.; PerezLara, C. E.; Perry, J.; Petti, R.; Phipps, M. W.; Pinkenburg, C.; Pisani, R. P.; Pun, A.; Purschke, M. L.; Radzevich, P. V.; Read, K. F.; Reynolds, D.; Riabov, V.; Riabov, Y.; Richford, D.; Rinn, Timothy Thomas; Rolnick, S. D.; Rosati, M.; Rowan, Z.; Runchey, J.; Safonov, A.; Sakaguchi, T.; Sako, H.; Samsonov, V.; Sarsour, M.; Sato, Susumu; Scarlett, C.; Schaefer, B.; Schmoll, B. K.; Sedgwick, K.; Seidl, R.; Sen, A.; Seto, R.; Sexton, A.; Sharma, D.; Shein, I.; Shibata, T. A.; Shigaki, K.; Shimomura, M.; Shioya, T.; Shukla, P.; Sickles, A. M.; Silva, C. L.; Silvermyr, D.; Singh, B. K.; Singh, C. P.; Singh, V. K.; Skoby, M. J.; Slunečka, M.; Smith, K.; Snowball, M.; Soltz, R. A.; Sondheim, W. E.; Sörensen, S.; Sourikova, I. V.; Stankus, P. W.; Stoll, S. P.; Sugitate, T.; Sukhanov, A.; Sumita, T.; Sun, J.; Sun, Z.; Suzuki, S.; Sziklai, J.; Tanida, K.; Tannenbaum, M. J.; Tarafdar, S.; Taranenko, A.; Tarnai, G.; Tieulent, R.; Timilsina, A.; Todoroki, T.; Tomášek, M.; Towell, C. L.; Towell, R. S.; Tserruya, I.; Ueda, Y.; Ujvári, B.; Hecke, H. W. van; Velkovska, J.; Virius, M.; Vrba, V.; Vukman, N.; Wang, X. R.; Wang, Z.; Watanabe, Y.; Wong, C. P.; Woody, C. L.; Xu, C.; Xu, Qingyang; Xue, L.; Yalcin, S.; Yamaguchi, Y.; Yamamoto, Hiroshi; Yanovich, A.; Yoo, J.; Yoon, I.; Yu, H.; Yushmanov, I. E.; Zajc, W. A.; Zelenski, A.; Zhai, Y.; Zharko, S.; Zou, L.

doi:10.1103/physrevlett.123.122001

Cited by 12 publications

(12 citation statements)

References 69 publications

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“…The above-observed suppression of the asymmetry with increasing A at low k T (see Figs. 6 and 8) seems to agree with the data reported by PHENIX [38]. Furthermore, our plots do not seem to exhibit flatness at high k T , as observed in [36,37].…”

Section: Plots Of the Asymmetrysupporting

confidence: 90%

“…[102]). This is in qualitative agreement with the preliminary results reported by STAR [39], but seems to disagree with the PHENIX data [38] which are more in line with our low-k T result (41).…”

Section: Estimates Of the Asymmetry: Subleading N Csupporting

confidence: 82%

“…resulting in a fast falloff of A N ∼ 1=k 3 T at large k T in Eq. (38). The origin of this steep falloff is easy to understand using our main result for the polarizationdependent cross section in Eq.…”

Section: Estimates Of the Asymmetry: Subleading N Cmentioning

confidence: 83%

“…Unfortunately, the rapid falloff with k T in Eq. (38) appears to contradict the data [36,37]: we will return to this question in the next subsection. Note also that the high-k T asymmetry falls off rapidly with decreasing γ, as one can see from Eq.…”

Section: High-and Low-k T Stsa At Large N Cmentioning

confidence: 89%

“…For one, A N in p ↑ þ p collisions was shown in [39] to be larger in processes where fewer photons were produced, thus suggesting that the asymmetry grows with increasing elasticity of the scattering. Another curious feature is that in p ↑ þ A collisions the asymmetry either appears to be suppressed for larger nuclear atomic numbers A or remains unaffected by such an increase in A depending on the kinematic regime in which it is studied [38,39].…”

Section: Introductionmentioning

confidence: 99%

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Lensing mechanism meets small- x physics: Single transverse spin asymmetry in p↑+p and p

Kovchegov

Santiago

2020

Phys. Rev. D

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We calculate the single transverse spin asymmetry in polarized proton-proton (p ↑ þ p) and polarized proton-nucleus (p ↑ þ A) collisions (A N) generated by a partonic lensing mechanism. The polarized proton is considered in the quark-diquark model while its interaction with the unpolarized target is calculated using the small-x/saturation approach, which includes multiple rescatterings and small-x evolution. The phase required for the asymmetry is caused by a final-state gluon exchange between the quark and diquark, as is standard in the lensing mechanism of Brodsky, Hwang, and Schmidt [Phys. Lett. B 530, 99 (2002)]. Our calculation combines the lensing mechanism with small-x physics in the saturation framework. The expression we obtain for the asymmetry A N of the produced quarks has the following properties: (i) The asymmetry is generated by the dominant elastic scattering contribution and the 1=N 2 c suppressed inelastic contribution (with N c the number of quark colors). (ii) The asymmetry grows or oscillates with the produced quark's transverse momentum p T until the momentum reaches the saturation scale Q s , and then only falls off as 1=p T for larger momenta. (iii) The asymmetry decreases with increasing atomic number A of the target for p T below or near Q s , but is independent of A for p T significantly above Q s. We discuss how these properties may be qualitatively consistent with the data on A N published by the PHENIX Collaboration [

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Section: Plots Of the Asymmetrysupporting

confidence: 90%

Section: Estimates Of the Asymmetry: Subleading N Csupporting

confidence: 82%

Section: Estimates Of the Asymmetry: Subleading N Cmentioning

confidence: 83%

Section: High-and Low-k T Stsa At Large N Cmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Lensing mechanism meets small- x physics: Single transverse spin asymmetry in p↑+p and p

Kovchegov

Santiago

2020

Phys. Rev. D

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show abstract

How EIC can help us to understand heavy-ion collisions

Hatta

2021

Nuclear Physics A

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The present and future of QCD

Achenbach,

Adhikari,

Afanasev

et al. 2024

Nuclear Physics A

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Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p , p+Al , and
C. Aidala¹,
Y. Akiba²,
M. Alfred³
et al.

Abstract: We report on the nuclear dependence of transverse-single-spin asymmetries (TSSAs) in the production of positively charged hadrons in polarized p ↑ +p, p ↑ +Al and p ↑ +Au collisions at √ s N N = 200

Cited by 12 publications

References 69 publications

Lensing mechanism meets small- x physics: Single transverse spin asymmetry in p↑+p and p

Lensing mechanism meets small- x physics: Single transverse spin asymmetry in p↑+p and p

How EIC can help us to understand heavy-ion collisions

The present and future of QCD

Contact Info

Product

Resources

About

Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p , p+Al , and C. Aidala1, Y. Akiba2, M. Alfred3 et al.

Abstract: We report on the nuclear dependence of transverse-single-spin asymmetries (TSSAs) in the production of positively charged hadrons in polarized p ↑ +p, p ↑ +Al and p ↑ +Au collisions at √ s N N = 200

Cited by 12 publications

References 69 publications

Lensing mechanism meets small- x physics: Single transverse spin asymmetry in p↑+p and p

Lensing mechanism meets small- x physics: Single transverse spin asymmetry in p↑+p and p

How EIC can help us to understand heavy-ion collisions

The present and future of QCD

Contact Info

Product

Resources

About

Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p , p+Al , and
C. Aidala¹,
Y. Akiba²,
M. Alfred³
et al.